Remove Extra call to CloseProcessHandle

Remove Extra call to CloseProcessHandle

WaitForExitCode already handles closing the processes handle, so we
shouldn't be double closing it.

TBR=waffles
BUG=428957
Committed: https://crrev.com/73eab03629de46c6d4b225b59aa4da111fadd729
Cr-Commit-Position: refs/heads/master@{#302208}

[csharp, 2014-10-30 20:40:31]

csharp@chromium.org changed reviewers:
+ sorin@chromium.org

[MAD, 2014-10-30 23:42:58]

mad@chromium.org changed reviewers:
+ mad@chromium.org

[MAD, 2014-10-30 23:42:58]

LGTM, I think we should TBR this to an OWNER and commit it now...

Thanks!

BYE
MAD

[MAD, 2014-10-31 00:45:30]

mad@chromium.org changed reviewers:
+ waffles@chromium.org

[MAD, 2014-10-31 00:45:35]

The CQ bit was checked by mad@chromium.org

[commit-bot: I haz the power, 2014-10-31 00:46:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/689993003/1

[Sorin Jianu, 2014-10-31 00:55:53]

lgtm

neat!

[commit-bot: I haz the power, 2014-10-31 01:29:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-31 01:30:19]

Patchset 1 (id:??) landed as
https://crrev.com/73eab03629de46c6d4b225b59aa4da111fadd729
Cr-Commit-Position: refs/heads/master@{#302208}